优优班--学霸训练营 > 题目详情

  • 　　　you were serious, I wouldn’t have laughed.

    【考点】与过去事实相反的假设，过去完成时，倒装句式，省略
    【分析】请登陆后查看
    【解答】请登陆后查看
    难度：较易
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